20800142

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:185

約数の個数: 48

約数和(自身を含む): 37116576

約数和(自身を除く): 16316434

約数列:

[1, 2, 11, 22, 23, 37, 46, 74, 101, 121, 202, 242, 253, 407, 506, 814, 851, 1111, 1702, 2222, 2323, 2783, 3737, 4477, 4646, 5566, 7474, 8954, 9361, 12221, 18722, 24442, 25553, 41107, 51106, 82214, 85951, 102971, 171902, 205942, 281083, 452177, 562166, 904354, 945461, 1890922, 10400071, 20800142]

約数ペア:

[(1, 20800142), (2, 10400071), (11, 1890922), (22, 945461), (23, 904354), (37, 562166), (46, 452177), (74, 281083), (101, 205942), (121, 171902), (202, 102971), (242, 85951), (253, 82214), (407, 51106), (506, 41107), (814, 25553), (851, 24442), (1111, 18722), (1702, 12221), (2222, 9361), (2323, 8954), (2783, 7474), (3737, 5566), (4477, 4646)]